Based on the graph, identify and define B and provide 2 reasons why oxygen consumption levels remain high following the exercise bout.

It seems like you are referring to a specific graph that I cannot see. However, I can provide a general understanding based on common knowledge in exercise physiology concerning oxygen consumption after exercise, often referred to as EPOC (Excess Post-exercise Oxygen Consumption).

Identification and Definition of B

1. Identification of B: Without the graph, I can't specify what B represents. However, in contexts related to exercise and oxygen consumption, it often refers to the point at which oxygen consumption is measured during or after physical exertion.

2. Definition: B could symbolize a point of elevated oxygen consumption post-exercise, where the body requires extra oxygen to restore homeostasis.

Reasons for High Oxygen Consumption Levels Following Exercise

1. Restoration of Muscle Energy Stores: After exercise, the body needs to replenish adenosine triphosphate (ATP) and creatine phosphate (CP) levels in muscle. This restoration process requires oxygen and contributes to higher oxygen consumption levels.

2. Lactate Clearance: Following intense exercise, lactate accumulates in the bloodstream. To metabolize and clear lactate, the body requires additional oxygen to convert lactate back into glucose through gluconeogenesis or to oxidize it in the mitochondria.

These factors contribute to maintaining elevated oxygen consumption levels even after physical activity has ceased, ensuring that the body recovers efficiently.